package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.apache.poi.util.PackageHelper;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 对前端传过来的明文密码进行md5加密处理
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }
    //实现
    public void save(EmployeeDTO employeeDTO){
        Employee employee=new Employee();
         //使用对象属性拷贝一次性将employeeDTO中的数据拷贝到employee中
        BeanUtils.copyProperties(employeeDTO,employee);
        //设置账号状态正常
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码，默认密码为123456
        employee.setPassword( DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置创建时间和更新时间
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());
        //动态获取当前登录用户的id
        //employee.setCreateUser(BaseContext.getCurrentId());
        //employee.setUpdateUser(BaseContext.getCurrentId());
        //调用mapper层新增员工
        employeeMapper.insert(employee);
    }
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO){
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
       Page<Employee>page  =employeeMapper.pageQuery(employeePageQueryDTO);
       return  new PageResult(page.getTotal(),page.getResult());
    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    public void startOrStop(Integer status,Long id){
        //利用builder实现更简洁的构造
        //由于启用禁用员工操作属于update,可以设置update通用方法,传入对象,根据对象数据的不同实现不同的修改
        Employee employee=Employee.builder().status(status)
                .id(id)
                .updateTime(LocalDateTime.now())
                .updateUser(BaseContext.getCurrentId())
                .build();
        employeeMapper.update(employee);
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    public Employee getById(Long id){
        Employee employee= employeeMapper.getById(id);
        employee.setPassword("****");
        return employee;
    }
    public void update(EmployeeDTO employeeDTO){
        Employee employee=new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }


}
